When water on the surface of the skin freezes, it is referred to as
a. frostbite.
b. frostnip.
c. mild hypothermia.
d. severe hypothermia.

The answer is B. Frostnip

Frostnip caused by superficial cooling of tissues without cellular destruction. It caused skin appears red and sometimes swollen. Frostnip doesn't permanently damage the skin even though it is very common for the patient to feel numbness around the freezed area